Electric-circuit-controlling means.



0. J. POX 1 W. 0. 111111111. ELECTRIC CIRCUIT CONTROLLING MEANS.

' Patented Feb. 7,1911.

APPLICATION FILED JULY 9, 1910 ITY PATENTOFFICE.

orrhnnn's J. grox 4m) WILLIAM c, snnrmjor noomzsauaia; NEW YORK.

Specification of Letters Patent. I

. "nLncrme-omcmnconrnomme nexus. 7

Application filed July 9,1910. Seria1 No.'- 571, 177.

Todllwhom'it may concern:-

Be it known that, we, CHARLES J. Fox and WILLIAM GIGREIN, citizens ofthe United States, and residents of Rochester, in the county of Monroeand State of New York,

I have invented a new andImproved Electric Circuit-ControllingMeans, ofwhich the following is a' specification. The object ofour invention istoprovide means for controlling an electric circuit adapted to use inconnection with switches,

such that the switch or other circuit closing.

means is rendered moperative'except to the proper arty or the partyhaving the proper means or effecting the closure of the C11- cu1t. v v

In carrying out .our'invention we preferably combine with circuitclosing means of ordinary construction, such as an insertible andremovable plug for closing-the circuit between two contacts, a keyactuated memher for obstructing or closing thepassa'ge or openingthrough or into which the circuit-closing means, for instance, the plug,is inserted, while at the same time this obstructing means when inits-inoperative position, permitting the' insertion of the plug, acts-toclose the circuit at another point whereby when the key. operated memberis moved to its 0 erative position to preventthe insertiono the plug thecircuit is not only opened at the contactsbetween which I the plug maybe inserted but it is also openedat another pointintroducing anotherelement of safety. .'We also prefer to c0-' operativelycombine with theabove mentioned features still another feature comprising a constructionnormally operating to lock the key actuated member against-41lovement byeven the proper key until there has been inserted, in the proper openingthere- ,for, preferably the circuit closing plug which thus operates toremove spring actu- {as to permit thesanle to operated bythe key.

lIn the accompanying drawings we have.

,shown an embodiment of our inventionas electric energythrough'a'translating device,-

illustrated 'in the drawings as an electric adapted to close.the-circuitfromfa source of motor, without however, limiting ourselvesto such or any special. embodiment of such I atente Feb. 7, 1911;

so I

actuated member in position to, prevent the insertion of the plug. Fig.5 is asectional view taken along the line w g of'Figi 1 of the lowerpart of the device and-showls-the release the key actuated plug'insertedto member.

Similar reference similar parts throughout the several figures of thedrawings.

- Beferring to the drawings,- B 'is the base piece having a downwardlyextending flange I characters; designate 1) provided at the corners withbosses having inwardly threaded-holes '0 to receive screws by means ofwhich the deviceis secured -to any desired structure, as asupport andbe-' ing thus secured from the back side the base portion B is notreadily removable to ren-. der the parts contained thereunderaccessible.

. Contact members 8 ands, are secured in recesses b"b in the base pieceB by means .of screws 6 from which wires 1 and 2 lead respectively tobattery Z and to a spr ng contact u. A. plugp'having a handle P isprovided for insertionflin the bushing C se-- cured within the basepiece B. This plug'p, when inserte in lace, is adapted to engage thecontacts 8 and s .to close the circuit between them. Secured tothe underside of the base member. B, by the flange 42, is seena lock- V which mabe of anysuitable construction," .preferab y,-"-'such as: adapted tooperation by means of a fiat key "inserted in a rotatable escu'tcheonniembero and adapted to I up or; ownwithreference to F gs; 1 and 2. Thebolt 1) is shown in its operative ;in Figs..1 and 2 'but, 'when actuate1by:the f-key in the escuteheonmember vethe holt'D toand fro, that1is,-'--

(position the opening atthebushingC'for receiving the plug'p. in'suchaway as to prevent vthe the bolt D may bethrown thereby to closeinsertion thereof. The'bolt -D when in its inoperative position isadapted to engage between two insulatingly supported spring contacts uand u, secured to the boss-b" to "close the-circuit betweensuchcontacts, while from the spring 14 a wire 3. leads to any de-' siredtranslating device such as illustrated diagrammaticallyi in th s case bythe motor M, from which connection is made' to the-' battery Z by wire4. 1

Secured on the under side .of the'bolt D are seentwo spring members'dheld in place by-means of screws as indicated and each carrying a. pin'e normally engaging through a hole alined therewith in the body-of thebelt I) and-into a hole a in the base member B sufliciently to prevent alongitudinal movement of the-bolt D by means ofthe key inserted intheescutcheon member 1;.

The holes forreceiving the pins m tioned,'as indicated in Fig. toreceivesueh pins when the bolt D .is-moved to its op-. erative positionand extending over the opening for the plugp and therefore out-of en-"gagementwith the contacts u and 2& thus leaving the circuit openbetween such springs. The plug p carries on its lower end two pins padapted, when inserted, 1n

the bushing C to engage the pins e andforce them downwardly out ofengagement with the base member B, immediately upon ling device isas-follows,-supposing the- 40 which the bolt D may be moved to its inoperative position, being that shown in 'Figs. 1 and 2.

I The method of using our circuit cont-rolparts to be-in-the positionsshown in- Figs. 1 and 2-, the insertion of the key and the operationthereof moves the bolt D to its operative position preventingtheinsertion of the plug p which, However has of course first beenremoved, and it also opens the circuit' between thecontacts u and a andat the same time the pinse engage'through the holes therefor-in the boltD and into the holes a inalin Inent therewith'in the base member B preenting the operation of the bolt'D even by means of the proper key.

' For. closing the circuit the plug member is inserted in the bushing Ctherefor, and 1t will be noticed, by reference to Fig. 3, that theholescare so positioned as toreceive the 3 pins 2 only for one angularposition of. the

-plug p whichfwhen thus pr'operlyinserted,

plug p toclos'ethe circuit between-the contacts s and sTheoperation;is'of'course reversed except asto the insertion of the plugin the bushing C} for operating the b olt to prevent an improper*closingof the C11CI1'1t., A; p

What we claim i-s:'

-' 1. In a devi'ceof thecharacter-describeu,

.a base;'two pair of insulatedjcontacts spaced .apart mounted on thebase; a plug ada ted toengage through .an opening in the ase and betweenthe contacts ofthe first pair to electrically connect, them; 'ap-kyactuated member movably mounted-onithe base and adapted in one positionto extend over the opening-for the plug in the base to .prevent theinsertion thereof and means whereby, when the key actuated member ismoved to its other position, electrical connection is es- 'tablishedbetween the second pair of contacts.

-2.;In a device of the character described,

a base; two pairofinsulatedcontacts spaced apart mounted. onthe base; aplug adapted to engage through anopening in the base and between theco'ntactsof 'the'first pair to electricallyv connect them;- a .keyactuated member movably mounted on the base and. adapted, in oneposition to extend over the opening for the plu 'in the base to preventthe insertion thereof; means whereby,when the key actuated member ismoved to its other position, electrical connection is estab- "lishedbetween the second pair of contacts and a locking means for holding thekey ae- .tuated member in such last named position adapted to bereleased by the plug in engagement therewith. I 3. Ina device of thecharacter described,

"a base; two pair of insulated contacts spaced apart mounted on thebase; a plug adapted to engage through an opening in the base andbetween thecontacts of the first pair to electrically connect them; akeyactuated member movably mounted on the base and adaptedin one positionto extend over the opening for the plug in the base nection isestablished between the second pair of contacts, su'chfirst and secondpair of contacts located in series with each other in an electriccircuit;

'110 to prevent the insertion thereof and means whereby, when the keyactuated member ismoved to its other position, electrical con-' 4. In adevice of the character described,

a base; two pair of insulated contacts spaced I l apart mounted on thebase; a plug adapted 'to'engage through an opening in the base a andbetween the contacts of the first pair, to

electrically eonr'iectfithem; a key actuatedmembe'r movably-mounted-onthe base and adapted in'one position to extend over'the openingfor theplug in the base to prevent the insertion thereof; means whereby, whenof contacts located in series With each other the key actuated member 1smoved to 1ts In an electllc clrcult. other posltlon, electncalconnectlon 1s estab- CHARLES J. Fox. hshed between the second pan ofcontacts 1 5 and a locking means for holding the key 210- TILLIAM GRLINtuated member in such last named position Witnesses: adapted to bereleased by the plug in engage- MARTHA M; NELSON,

ment therewith, such first and second pair OSBORNE F. G'URNEY.

